js来源IP限制

<script type="text/javascript">function auth(doc){var laiyuan = doc.referrer;var isAuth = "0";if(isAuth==0){// not authif(laiyuan!=null && laiyuan!=''){var lai01 = laiyuan.substr(0,16);//http://127.0.0.1var lai02 = laiyuan.substr(0,19);//http://172.20.0.205var lai03 = laiyuan.substr(0,28);//http://www.panshao.com/mywebif(lai01 !='http://127.0.0.1' && lai02 !='http://172.20.0.205' && lai03 !='http://www.panshao.com/myweb') {//no right return 0;}else{// has rightreturn 1;}}else{return 0;}}}var laiyuan1 = document.referrer;var flag = auth(document);if(flag==0){window.location.href='<%=root %>'+"/fail.jsp";}</script>